Keyword Cipher Encryption and Decryption in Java

Keyword Cipher in Java 01:22 - Keyword Operations 02:51 - Checking repetition of letters in keyword 04:50 - Alphabet generation with keyword and removing keyword letters from alphabet 07:06 - Encryption 09:24 - Decryption -*- Support on Patreon: https://www.patreon.com/voxelpixel -*- Source Code: https://github.com/VoxelPixel Keyword cipher encryption and decryption using java Keyword is a monoalphabetic substitution cipher, its algorithm is as following: - Pick a letter as a keyword but no letter of alphabet should repeat in this keyword - Write that word at beginning of alphabet and remove it's letters from alphabet, this version of alphabet will be used for encryption - Write alphabet under the version of alphabet created above - Replace each letter of message with a letter at position of alphabet in keyword alphabet - To Decrypt a letter of message, replace that letter in keyword alphabet with a letter in alphabet at that position